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U.S. Solar Power Monthly
September Up 30% Versus Last Year
Highlights:
- EnerWrap wrangles daily and monthly solar data, the EIA-860M and bespoke behind-the-meter data to provide an exhaustive look in the U.S. solar market 
- Solar growth is one of the biggest stories in U.S. and global energy markets this year 
- Utility-scale solar generation is up 36% year-to-date; ERCOT is up 55% year-to-date 
- U.S. L-48 solar generation in September was 18,742 GWHrs, down -15.5% versus last month and up 29.9% versus last year 
- Last 12-month U.S. utility-scale solar generation was 193.4 TWHrs versus 81.0 TWHrs of small-scale 
- U.S. utility-scale solar generation was up 26.5% versus 13.9% for behind-the-meter 
- Through July LTM utility-scale solar generation was up 26.9% versus BTM up 18.4% 
- Total utility-scale solar capacity is currently 118,875 megawatts 
- Total solar capacity, including BTM is currently 157,130 megawatts 
- ERCOT has exceeded CAISO utility-scale generation in 2024 



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